Repair-plug.



M10. TRESTER.

REPAIR PLUG- APPLICATION FILED MAY 11, 19x5.

Patented Feb. 22, 1916.

idea-IE2 UNITED STATES PATENTOFFICE.

ORTON o. rnnsrnn, or Lr vcoLmnnBnAsKAQ REPAIR-PLUG;

Continuation of application Serial No. 797,620, filed 0ctober2 7, 1 913.

I Serial No. 27,410.

To all whomit maf Concern:

Be itknown that I, MORTON O. TRESTER,

a citizen of the United States, residing at Lincoln, in the county of Lancaster and State of Nebraska, have invented certain or like apparatus and includes means for horizontal alinement with collectively supporting theseveral co-acting elements dr-ring the inserting and repairing operation.

The principal object is to provide such means for supporting the several parts which preferably consistsof a soft pliable wire, firstly in order that the catch plate may be operated to attain a position in the threaded shank portion, in order to facilitate its insertion into the leak aperture; secondly, to allow the operator to manipulate the device Without the danger of being scalded or otherwise injured by the escaping contents of the boiler and finally to facilitate the operation of the entire device. Variousother objects and advantages will become apparent during the following description.

The above and other objects are accomplished vby such means as are shown in their preferred form in the accompanying drawings, described in the following specification andmore specifically pointed out in the appended claims. a

In the accompanying drawings wherein is illustrated the preferred form of-my invention and wherein like characters designate like parts throughout the several views, Figure 1 is a view showing a portion of a boiler'wall and my improved plug in elevation. Fig. 2 is a sectional view showing an opening in the boiler wall closed by my improved plug. Fig. 3 is a perspective view of t p t h Plat hie PlflFlQd Within the Specification of Letters Patent.

Patented Feb; 22, 1916.

This appIication filed May 11, 1915.

' boiler. Fig. 4 is arear elevation of the catch plate shown in Fig. 3. v 'Myunvention, in its preferred embodiment s preferablyused for the purpose of sealing "leak apertures which invariably occur in range boilers and the like apparatus',,and in 'viewof illustrating more concisely the exact operation thereof, a section of a range boilerhas been shown; in the ac companying drawings,- the same being indicatedby the numeral 10 and having a. leak aperture 11 formedtherein. In connection with I devices of this character, serious.

difficulties have. presented themselves, first i it has been found that the steam escaping through the leak aperture in the boiler will burn the hand of the operator during the insertion of the catch plate; secondly that after the catch plate is inserted into the boiler, the same. is liable to be lost during the fastening of the several washers on that portion of the device projecting exteriorly of the boiler; thirdly that the manipulation of said washers and securing means is greatly impeded by the shortness of the threaded shank and the fact that the same cannot be conveniently held in a correct horizontal position during the fastening operation. Numerous devices have been devised to overcome these .various difficulties, the most prominent of which includes a pivoted catch plate which will allow the same to be moved into alinement with the threaded shank portion in order to facilitate its insertion into the leak aperture. This has proven very deficient because of the following reasons. The provision of a pivoted catch plate renders the device entirely too complicated and it has been found that these devices cannot be manufactured and placed upon the market at a reasonable cost. Again it has been found that the catch plate cannot be held efficiently in horizontal alinement with the threaded shank portion in order that it may be quickly and easily in-- serted through the leak aperture in the boiler.

My invention consists generally of a parent member in the form of an eXteriorly screw threaded shank 12. One end of this shank is enlarged to form a squared portion 18 that merges into a suitable head 14. A

soft pliable Wire 15 extends from the other end of the shank 12 in substantial alinement therewith, the adjacent end of the wire 15 being secured to the shank. in any well known manner. For the purpose of facili-,

tating the manipulation of the apparatus the free end of the pliable wire 15 is curled as at 16.

My invention further consists of a catch plate which comprises a back portion 17 which is bent to'form'a continuous rim 18 and provided with a central squared opening 19 which is designed to receive the squared portion 13of the parent member. That portion of the rim which is adjacent the squared opening 19 is curved as at 20 in order to allow the free movement of the shank -12 therethrough during the inserting operation.

Inthe sealing operation, the parts of the device are arranged substantially in the manner shown in Fig. 1, after which the catch plate is moved to a position that is substantially in alinement with the shank portion 12. hen the catch plate is in this position, it will be understood that the'wire 15 will be distorted. to a considerable extent yet it will be appreciated that thewire may be returned to its normal position to allow the other elements to be moved thereon. After the, catch plate isin alinement with the shank portion 12, the shank portion and the catch plate are inserted through the opening 11 after which the shank portion is drawn outwardly through the medium of the wire 15, the portion 13 entering the squared opening 19 of the catch plate, and the head portion engaging the back portion of the catch plate so that the same will be forced into engagement with the inner periphery of the boiler inthe manner clearly shown in Fig. 2. -When the parts are in this position, the flexible washer 21. is moved over the wire 15 and shank portion 12 until itoengages the outer face of the boiler. The rigid member 22 is moved correspondingly until it engages the outer face of the washer 21. After this operation the fastening nut 23 is manipulated about the screw threaded shank 12 in order to frictionally engage the rigid member 22 and securely hold the coacting parts in a secure position. After the leak aperture is securely sealed, the wire 15 may be broken from the shank 12 .or itmay be wound on the said shank so as to be of use during the removal of the plug.

The greatest stress is directed to the provisionof the wire 15 in view of the fa ct that it collectively supports each of the elements in a manner whereby they may be quickly and efficiently operated.

. In reducing my invention to practice. I have found that the form referred to herein as the preferred embodiment is themost efiicient: yet realizing that certain conditions. will necessarily vary in concurrence with the adoption of my device, I desire to emphasize the fact that various minor changes in the details of constructlon and proportion of parts may be resorted to when required without sacrificing any of the ad-. vantages of my invention as defined 1n the appended claims.

Having thus fully described my invention,

what I claim as new and desire 110 secure y. Letters Patent is? "1. rt device of the character de ib d comprising a shank, a. soft wire extending" from saidshank, a catch plate slidably mounted on said wire and movable upon: said shank 1n substantial allnement with said shank, a sealing washer mountedonn said wire and movable upon said shank.

after said shank and said catch plate. are in position and fastening means normally supported by said wire for engaging said shank and said sealing Washer, substam tially' as described.

2. In a device of the character described,

a repair plug comprising a parent member consisting of an exteriorly screw threaded shank, one end of said-shank enlarged. to:

form a squared portion, ahead member carried by said squared portion, a soft pliable wire projectingfrom the-other end of said shank, a catch plate, a sealing washer, a

rigid washer and fastening member, said wire normally supporting said elements and allowing said catch plate to be moved to a position substantially inalinement with, said shank to facilitate its" operation,

substantially as described.

3. In a deviceof the character described,

a repair plug including a parent member, said member consistlng of an exteriorly screw threaded shank, said shank being enlarged at one end to form a squared portion,

a head member formed therefrom in alinement therewith, a catch adjacent said squared portion, a soft pliable wire having, connection with said shank and extending,

plate, a square opening in said catch plate ating with said parent member and said catch plate. substantially as described.

4. In a device of the character described,

a repair plug consisting of a parent member including an exteriorly screw threaded shank, a squared enlargement on said shank, a head portion provided adjacent-said enlargement, a soft pliable wire carried by said shank portion andextending therefrom in substantial alinement, a catch plate consisting of a back portion, having an annular mm, a squared opening formed in said back portion to cooperate wlth sald squared enlargement, said catch plate being normally mounted on saidwire whereby it may be moved to a position substantially in alinement with said shank, a sealing washer normally arranged on said wire to cooperate with said parent member, a rigid washer normally mounted onsaid wire to cooperate with said sealing washer, and a fasteningnut normally arranged on said wire to cooperate with said shank and retaln said washers 1n a secure position, substantially as descrlbed.

In testimon whereof I afiiX my Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

